A police officer has died suddenly at a PSNI station in Portrush.
The officer had been in work on Friday morning when the incident took place.
QRadio news understands a firearm was involved.
A post mortem is expected to take place and investigations will begin.
Chief Superintendent Paula Hilman said: "Our thoughts and sympathies are with his family and friends.
"They have asked for privacy during this difficult time.
Jury sworn in for Noah Donohoe inquest
Sharing of explicit AI images in Armagh school being investigated by police
Long-awaited inquest into death of Belfast schoolboy Noah Donohoe due to start
Murder investigation launched following death of man in Coleraine
Man arrested over threats to elected representatives